A family has two male children one brother has a straight thumb a straight thumb while the other brother has a bent thumb what causes this difference

Why was it beneficial for northern Europeans to be lactose tolerant when lactose intolerance was more common in most other places?

The following statement is false. Select the rewording that makes the statement true. Robert Brown first discovered cells when observing cork under the microscope. A.

In animal cells, much of the carbon dioxide produced is A. used for energy. B. converted to suar. C. excreted as waste D. stored in vacuoles

Foods of animal origin are the most common sources of food-borne illnesses. a. True b. False

A. A cell has n=3. How many total chromosomes are in a diploid cell?

Name some proteins that are made at ribosomes.

Which describes organs in the human body? the largest living unit a group of cells that work together to perform a common function a group of tissues that work together to perform a common function the smallest living unit

Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: 1. an allopatric barrier to reproduction. 2. a postzygotic barrier to reproduction. 3.

A group of cells working together is known as what

What do amoeba proteus, dinoflagellate, and euglena viridis have in common? a. they all can move and make their own food b. they all can move and use eye spot to locate food c. they all can move and be heterotrophic d.